d4ba05a22f
Summary: The addition of the test infrastructure is motivated by the regressions caused by adding mode switching and transformation support. A contributing factor to these regression is the fact that the DRM platform does not have any tests. It is difficult to test this code as it needs to work with hardware, thus we cannot use the real DRM library. Instead we need to use mocking. This change sets up some first basic tests with the help of a mockDrm library. In order to better test the code as units the Drm classes are slightly refactored. Most importantly the dependency to DrmBackend is removed wherever possible and replaced by a simple int fd which is mostly the only element used by the classes. This first test introduces basic testing of a DrmObject. It is intended to extend this to at least also test DrmPlane as a central piece of our Drm platform plugin. This will also extend the tests of DrmObject. Reviewers: #kwin, #plasma Subscribers: plasma-devel Tags: #plasma Differential Revision: https://phabricator.kde.org/D8776
107 lines
3 KiB
C++
107 lines
3 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "drm_buffer.h"
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#include "logging.h"
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// system
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#include <sys/mman.h>
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#include <errno.h>
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// drm
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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namespace KWin
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{
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DrmBuffer:: DrmBuffer(int fd)
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: m_fd(fd)
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{
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}
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// DrmDumbBuffer
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DrmDumbBuffer::DrmDumbBuffer(int fd, const QSize &size)
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: DrmBuffer(fd)
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{
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m_size = size;
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drm_mode_create_dumb createArgs;
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memset(&createArgs, 0, sizeof createArgs);
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createArgs.bpp = 32;
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createArgs.width = size.width();
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createArgs.height = size.height();
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if (drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &createArgs) != 0) {
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qCWarning(KWIN_DRM) << "DRM_IOCTL_MODE_CREATE_DUMB failed";
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return;
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}
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m_handle = createArgs.handle;
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m_bufferSize = createArgs.size;
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m_stride = createArgs.pitch;
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if (drmModeAddFB(fd, size.width(), size.height(), 24, 32,
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m_stride, createArgs.handle, &m_bufferId) != 0) {
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qCWarning(KWIN_DRM) << "drmModeAddFB failed with errno" << errno;
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}
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}
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DrmDumbBuffer::~DrmDumbBuffer()
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{
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if (m_bufferId) {
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drmModeRmFB(fd(), m_bufferId);
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}
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delete m_image;
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if (m_memory) {
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munmap(m_memory, m_bufferSize);
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}
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if (m_handle) {
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drm_mode_destroy_dumb destroyArgs;
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destroyArgs.handle = m_handle;
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drmIoctl(fd(), DRM_IOCTL_MODE_DESTROY_DUMB, &destroyArgs);
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}
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}
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bool DrmDumbBuffer::needsModeChange(DrmBuffer *b) const {
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if (DrmDumbBuffer *db = dynamic_cast<DrmDumbBuffer*>(b)) {
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return m_stride != db->stride();
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} else {
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return true;
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}
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}
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bool DrmDumbBuffer::map(QImage::Format format)
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{
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if (!m_handle || !m_bufferId) {
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return false;
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}
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drm_mode_map_dumb mapArgs;
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memset(&mapArgs, 0, sizeof mapArgs);
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mapArgs.handle = m_handle;
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if (drmIoctl(fd(), DRM_IOCTL_MODE_MAP_DUMB, &mapArgs) != 0) {
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return false;
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}
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void *address = mmap(nullptr, m_bufferSize, PROT_WRITE, MAP_SHARED, fd(), mapArgs.offset);
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if (address == MAP_FAILED) {
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return false;
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}
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m_memory = address;
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m_image = new QImage((uchar*)m_memory, m_size.width(), m_size.height(), m_stride, format);
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return !m_image->isNull();
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}
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}
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